Some of the C tests want to start a java container when the user running the
tests might not have access to the container credential in /etc or have a valid
proxy. Up till now, the tests have relied on user being in
/etc/grid-security/grid-mapfile and having a valid proxy. The tests should
switch over to using the globus_test package's credentials. Additionally, that
package should be updated to include a global security descriptor file which
contains a reference to the test credentials and the grid-mapfile created by the
setup script.

C Tests to update:
- notification_test
- interop_test
- performance_test

Plus add global_security_descriptor.xml creation to the globus_test package